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Available on Alibaba Marketplace and powered by Miri infotech, Cassandra offers robust support for clusters spanning multiple datacenters. It is highly scalable and great in performance. Cassandra has peer to peer distributed system across its nodes where data is distributed among all the nodes in a cluster. Each and every node is independent as well interconnected to the other nodes.

Miri Infotech, a leading IT solutions provider is launching a product that will configure and publish Cassandra, to produce free implementations of distributed or otherwise scalable and high availability which is embedded pre-configured tool with Ubuntu and ready-to-launch AMI on Amazon EC2 that contains Cassandra and Hadoop.

One of the things about Cassandra that users enjoy is that there is no single point of failure in its database and no network bottlenecks. Apache Cassandra is not just limited to this but is also a NoSQL(Not Only Sql) database management system that is designed to handle large amounts of data across numerous commodity servers. Cassandra’s level of performance is also high which makes it more impactful as well as flexible that can to be easily used by everyone.

It uses the concept of nodes where there is no master node but instead all the nodes play undistinguishable role and communicates with each other equally. The key components of Cassandra are−

Bloom filter − Quick, nondeterministic, algorithms for testing whether an element is a member of a set. Bloom filters can be accessed after every query. It is a special kind of cache.
Data center − It is a group of related nodes.
Commit log − The commit log is a crash-recovery mechanism and every write operation is written to the commit log.
Node − It is the place where data is stored.
Cluster − A cluster contains one or more data centers.
Mem-table − Mem-table is a memory-resident data structure. After commit log, the data will be written to the mem-table.
SSTable − It is a disk file to which the data is flushed from the mem-table when its contents reach the threshold value.

Usage/Deployment Instruction

Note: Please open the following Security Ports in the instance:

5601, 9200, 54323, 9093, 2181, 9092, 5902, 5901, 3000, 8091, 54321, 4040, 8787, 8080, 8088

For detailed procedure to add ports: click here

Step 1: Open Putty for SSH

Step 2: Open Putty and Type <instance public IP> at “Host Name”

Type "root" as user name and “miri@123” as Password.

Note: Type the following command on the instance and press enter: vi /etc/hosts

Following screen will appear and press “insert” button to enter in the insert mode:

Take the Private Ip address from your machine as per the below screenshot and then add it as the second line of your command screen with that Private ip address as shown in screenshot.

Then press” Esc” button and type “:wq” and press enter to exit from the text editor.

Note: Please run the following command: echo "127.0.0.1 `hostname`" >> /etc/hosts

Then run the command vi /etc/hosts and exit the file by pressing the button Esc and then enter :wq then press enter.

Step 3: Use following Linux command to start cassandra

Note: Please do not copy the below commands, type it manually.

Command- cassandra -R

Now, please press Ctrl+C to exit from the running command.

Command- cqlsh

Run any cassandra command and enjoy.

Note: you can type quit to exit from the ongoing Cassandra cluster.

Optional for Hadoop core:

Step 1: Type the following commands:

Command- ssh-keygen -t rsa -P ""

This command is used to generate the ssh key.

Command- cat $HOME/.ssh/id_rsa.pub >> $HOME/.ssh/authorized_keys

This command is used to move the generated ssh key to the desired location

Command- hdfs namenode –format

Command- start-all.sh

You have to write “yes” when it prompts you – Are you sure you want to continue?

Step 2: After the above command executes successfully, you should check the below urls in the browser -

http://<instance-public-ip>:8088

All your queries are important to us. Please feel free to connect.

24X7 support provided for all the customers.

We are happy to help you.

Submit your Query: http://www.miritech.com/ContactUs.aspx

Contact Numbers:

(510) 298-5936
(510) 870-8668

Contact E-mail:

support@miritech.com

Other Useful Links:

Product Demo: https://youtu.be/mVdBxCgEpuo

Post your Queries here.

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You can subscribe to this product from Alibaba Cloud Marketplace and launch an instance from the product's image using the Alibaba ECS service.

Log on to the ECS console.
On the Instances page, click Create Instance to enter the Custom purchase page.
Follow these steps to finish Basic Configurations.
1. Select Billing Method. Select Pay-As-You-Go.
2. Select a region, such as China East 1. Select a zone, or allow one be allocated randomly, as by default.

Note After an instance is created, you cannot change its region and zone.

Select an instance type and specify the quantity of instances.

The available Instance type families are determined by the region selected. In this example, select All Generations > x86-Architecture > Entry-Level (Shared) > Compact Type xn4.

Select an image. The Product Image is selected.
Select a storage space. Only a system disk is used, and the 40 GiB Ultra Cloud Disk is selected, which is the default.

Click Next: Networking to finish the networking and security group configuration.
Select VPC as the network type. Select the default VPC and VSwitch.
Set the network billing method.

Select Assign public IP and Pay-By-Traffic.

Select a security group. You can use the default security group if you do not create one.
Add an Elastic Network Interface (ENI). Skip this step if the selected instance type does not support ENI.

Click Next: System Configurations.

Set configurations as needed. We recommend that you inherit the password from existing image.

Click Next: Grouping. You can set the options here as needed. In the case of multiple instances, we recommend that you add labels for ease of administration.
Click Next: Preview. Confirm the selected configuration. You can also click the edit icon to return and modify the configurations.
Read and confirm Terms of Service, then click Create Instance.

1How can database management software help my business?

Database management software can help you create and manage your databases so you can easily capture and analyze data. This easily accessible data often leads to greater business insight, helping you refine your data-driven efforts.
2What is Hadoop?

The Apache Hadoop software library allows for the distributed processing of large data sets across clusters of computers using a simple programming model. The software library is designed to scale from single servers to thousands of machines; each server using local computation and storage. Instead of relying on hardware to deliver high-availability, the library itself handles failures at the application layer. As a result, the impact of failures is minimized by delivering a highly-available service on top of a cluster of computers.
3Where does Hadoop find applicability in business?

Hadoop, as a scalable system for parallel data processing, is useful for analyzing large data sets. Examples are search algorithms, market risk analysis, data mining on online retail data, and analytics on user behavior data.
4What is big data security analytics?

Add the words “information security” (or “cybersecurity” if you like) before the term “data sets” in the definition above. Security and IT operations tools spit out an avalanche of data like logs, events, packets, flow data, asset data, configuration data, and assortment of other things on a daily basis. Security professionals need to be able to access and analyze this data in real-time in order to mitigate risk, detect incidents, and respond to breaches. These tasks have come to the point where they are “difficult to process using on-hand data management tools or traditional (security) data processing applications.”
5After entering the data from the front-end application interface, how do you test whether a database is updated or not
It totally depends on the application interface that you are using. These are some following ways,
- You can verify only from the front-end when application interface shows view functionality of the data you enter. Mainly, Black box test engineers do this functionality verification test in this way.
- If application interface doesn’t provide view functionality of the data you enter, then you can check for database update by using relevant SQL/Oracle query.
6What are the popular machine learning algorithms in use today?
There are many machine learning algorithms in use today, but the most popular ones are:
- Decision Trees
- Naive Bayes Classification
- Ordinary Least Squares Regression
- Logistic Regression
- Support vector machines
- Ensemble Methods
- Clustering Algorithms
- Principal Component Analysis
- Singular Value Decomposition
- Independent Component Analysis

Cassandra

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1How can database management software help my business?

2What is Hadoop?

3Where does Hadoop find applicability in business?

4What is big data security analytics?

5After entering the data from the front-end application interface, how do you test whether a database is updated or not

6What are the popular machine learning algorithms in use today?

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